Interaction modes between asymmetrically and oppositely charged rods

Tutkimustuotos: Lehtiartikkelivertaisarvioitu

Tutkijat

Organisaatiot

  • Yale University

Kuvaus

The interaction of oppositely and asymmetrically charged rods in salt - a simple model of (bio)macromolecular assembly - is observed via simulation to exhibit two free energy minima, separated by a repulsive barrier. In contrast to similar minima in the Derjaguin-Landau-Verwey-Overbeek (DLVO) theory, the governing mechanism includes electrostatic attraction at large separation, osmotic repulsion at close range, and depletion attraction near contact. A model accounting for ion condensation and excluded volume is shown to be superior to a mean-field treatment in predicting the effect of charge asymmetry on the free-energy profile.

Yksityiskohdat

AlkuperäiskieliEnglanti
Artikkeli022602
JulkaisuPhysical Review E
Vuosikerta93
Numero2
TilaJulkaistu - 2016
OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

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